./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ed9b2f-140b-4074-95cb-2d2528da6ffe/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ed9b2f-140b-4074-95cb-2d2528da6ffe/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ed9b2f-140b-4074-95cb-2d2528da6ffe/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ed9b2f-140b-4074-95cb-2d2528da6ffe/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ed9b2f-140b-4074-95cb-2d2528da6ffe/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ed9b2f-140b-4074-95cb-2d2528da6ffe/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a7843ed292ba7ad810f8623eae57d1bf23212a957c35d700b564dc03a7df5581 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:45:41,751 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:45:41,863 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ed9b2f-140b-4074-95cb-2d2528da6ffe/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:45:41,872 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:45:41,873 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:45:41,913 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:45:41,914 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:45:41,915 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:45:41,916 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:45:41,921 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:45:41,921 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:45:41,922 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:45:41,923 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:45:41,925 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:45:41,926 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:45:41,926 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:45:41,927 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:45:41,927 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:45:41,928 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:45:41,928 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:45:41,928 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:45:41,929 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:45:41,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:45:41,930 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:45:41,930 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:45:41,931 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:45:41,931 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:45:41,932 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:45:41,932 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:45:41,933 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:45:41,934 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:45:41,934 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:45:41,935 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:45:41,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:45:41,935 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:45:41,935 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:45:41,936 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:45:41,936 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:45:41,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:45:41,936 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:45:41,937 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:45:41,937 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:45:41,937 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:45:41,938 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:45:41,938 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ed9b2f-140b-4074-95cb-2d2528da6ffe/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ed9b2f-140b-4074-95cb-2d2528da6ffe/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7843ed292ba7ad810f8623eae57d1bf23212a957c35d700b564dc03a7df5581 [2023-11-26 10:45:42,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:45:42,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:45:42,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:45:42,303 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:45:42,304 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:45:42,305 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ed9b2f-140b-4074-95cb-2d2528da6ffe/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2023-11-26 10:45:45,560 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:45:45,889 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:45:45,891 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ed9b2f-140b-4074-95cb-2d2528da6ffe/sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2023-11-26 10:45:45,940 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ed9b2f-140b-4074-95cb-2d2528da6ffe/bin/uautomizer-verify-VRDe98Ueme/data/39b19d9e9/4c41db0f45bf4b17825405de6ca2d6f2/FLAG5c29a0065 [2023-11-26 10:45:45,962 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ed9b2f-140b-4074-95cb-2d2528da6ffe/bin/uautomizer-verify-VRDe98Ueme/data/39b19d9e9/4c41db0f45bf4b17825405de6ca2d6f2 [2023-11-26 10:45:45,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:45:45,970 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:45:45,974 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:45:45,974 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:45:45,981 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:45:45,983 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:45:45" (1/1) ... [2023-11-26 10:45:45,985 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc69833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:45, skipping insertion in model container [2023-11-26 10:45:45,985 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:45:45" (1/1) ... [2023-11-26 10:45:46,093 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:45:46,488 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:45:46,500 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:45:46,544 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:45:46,596 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:45:46,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:46 WrapperNode [2023-11-26 10:45:46,597 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:45:46,598 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:45:46,599 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:45:46,599 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:45:46,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:46" (1/1) ... [2023-11-26 10:45:46,634 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:46" (1/1) ... [2023-11-26 10:45:46,668 INFO L138 Inliner]: procedures = 187, calls = 16, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2023-11-26 10:45:46,670 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:45:46,671 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:45:46,671 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:45:46,671 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:45:46,684 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:46" (1/1) ... [2023-11-26 10:45:46,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:46" (1/1) ... [2023-11-26 10:45:46,699 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:46" (1/1) ... [2023-11-26 10:45:46,725 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [1, 5]. 83 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 4 writes are split as follows [1, 3]. [2023-11-26 10:45:46,725 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:46" (1/1) ... [2023-11-26 10:45:46,726 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:46" (1/1) ... [2023-11-26 10:45:46,735 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:46" (1/1) ... [2023-11-26 10:45:46,737 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:46" (1/1) ... [2023-11-26 10:45:46,739 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:46" (1/1) ... [2023-11-26 10:45:46,741 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:46" (1/1) ... [2023-11-26 10:45:46,744 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:45:46,745 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:45:46,746 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:45:46,746 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:45:46,748 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:46" (1/1) ... [2023-11-26 10:45:46,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:45:46,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ed9b2f-140b-4074-95cb-2d2528da6ffe/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:46,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ed9b2f-140b-4074-95cb-2d2528da6ffe/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:45:46,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ed9b2f-140b-4074-95cb-2d2528da6ffe/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:45:46,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:45:46,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:45:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:45:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:45:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 10:45:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:45:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:45:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 10:45:46,844 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 10:45:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:45:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 10:45:46,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:45:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:45:46,850 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:45:47,087 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:45:47,092 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:45:47,278 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:45:47,442 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:45:47,443 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:45:47,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:45:47 BoogieIcfgContainer [2023-11-26 10:45:47,444 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:45:47,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:45:47,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:45:47,452 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:45:47,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:45:45" (1/3) ... [2023-11-26 10:45:47,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d278b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:45:47, skipping insertion in model container [2023-11-26 10:45:47,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:46" (2/3) ... [2023-11-26 10:45:47,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d278b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:45:47, skipping insertion in model container [2023-11-26 10:45:47,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:45:47" (3/3) ... [2023-11-26 10:45:47,460 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_15-list_entry_nr.i [2023-11-26 10:45:47,469 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:45:47,479 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:45:47,479 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-26 10:45:47,479 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:45:47,523 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 10:45:47,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 21 transitions, 46 flow [2023-11-26 10:45:47,589 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2023-11-26 10:45:47,589 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:45:47,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-26 10:45:47,591 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 21 transitions, 46 flow [2023-11-26 10:45:47,594 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 20 transitions, 43 flow [2023-11-26 10:45:47,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:45:47,630 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@69e129cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:45:47,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-26 10:45:47,644 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:45:47,646 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-26 10:45:47,647 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:45:47,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:47,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 10:45:47,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:47,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:47,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1249672107, now seen corresponding path program 1 times [2023-11-26 10:45:47,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:47,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744432258] [2023-11-26 10:45:47,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:47,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:48,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:48,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744432258] [2023-11-26 10:45:48,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744432258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:48,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:48,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:45:48,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842922446] [2023-11-26 10:45:48,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:48,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:45:48,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:48,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:45:48,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:45:48,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2023-11-26 10:45:48,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 43 flow. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:48,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:48,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2023-11-26 10:45:48,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:48,775 INFO L124 PetriNetUnfolderBase]: 52/125 cut-off events. [2023-11-26 10:45:48,775 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:45:48,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 125 events. 52/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 389 event pairs, 10 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 243. Up to 65 conditions per place. [2023-11-26 10:45:48,783 INFO L140 encePairwiseOnDemand]: 14/21 looper letters, 28 selfloop transitions, 8 changer transitions 2/41 dead transitions. [2023-11-26 10:45:48,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 41 transitions, 161 flow [2023-11-26 10:45:48,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:45:48,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:45:48,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2023-11-26 10:45:48,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2023-11-26 10:45:48,801 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 64 transitions. [2023-11-26 10:45:48,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 64 transitions. [2023-11-26 10:45:48,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:48,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 64 transitions. [2023-11-26 10:45:48,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:48,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:48,811 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:48,813 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 43 flow. Second operand 6 states and 64 transitions. [2023-11-26 10:45:48,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 41 transitions, 161 flow [2023-11-26 10:45:48,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 41 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:45:48,821 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 94 flow [2023-11-26 10:45:48,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2023-11-26 10:45:48,827 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2023-11-26 10:45:48,827 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 94 flow [2023-11-26 10:45:48,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:48,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:48,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 10:45:48,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:45:48,829 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:48,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:48,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1250192433, now seen corresponding path program 1 times [2023-11-26 10:45:48,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:48,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217015150] [2023-11-26 10:45:48,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:48,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:49,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:49,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217015150] [2023-11-26 10:45:49,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217015150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:49,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:49,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:45:49,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203177696] [2023-11-26 10:45:49,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:49,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:45:49,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:49,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:45:49,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:45:49,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2023-11-26 10:45:49,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:49,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:49,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2023-11-26 10:45:49,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:49,249 INFO L124 PetriNetUnfolderBase]: 29/100 cut-off events. [2023-11-26 10:45:49,249 INFO L125 PetriNetUnfolderBase]: For 54/56 co-relation queries the response was YES. [2023-11-26 10:45:49,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 100 events. 29/100 cut-off events. For 54/56 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 353 event pairs, 8 based on Foata normal form. 14/114 useless extension candidates. Maximal degree in co-relation 229. Up to 54 conditions per place. [2023-11-26 10:45:49,252 INFO L140 encePairwiseOnDemand]: 14/21 looper letters, 23 selfloop transitions, 8 changer transitions 3/39 dead transitions. [2023-11-26 10:45:49,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 39 transitions, 214 flow [2023-11-26 10:45:49,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:45:49,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:45:49,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2023-11-26 10:45:49,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2023-11-26 10:45:49,255 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 66 transitions. [2023-11-26 10:45:49,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 66 transitions. [2023-11-26 10:45:49,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:49,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 66 transitions. [2023-11-26 10:45:49,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:49,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:49,259 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:49,259 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 94 flow. Second operand 6 states and 66 transitions. [2023-11-26 10:45:49,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 39 transitions, 214 flow [2023-11-26 10:45:49,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 39 transitions, 214 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:45:49,264 INFO L231 Difference]: Finished difference. Result has 42 places, 28 transitions, 142 flow [2023-11-26 10:45:49,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=142, PETRI_PLACES=42, PETRI_TRANSITIONS=28} [2023-11-26 10:45:49,265 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 18 predicate places. [2023-11-26 10:45:49,265 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 28 transitions, 142 flow [2023-11-26 10:45:49,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:49,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:49,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:49,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:45:49,267 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:49,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:49,267 INFO L85 PathProgramCache]: Analyzing trace with hash 85129837, now seen corresponding path program 1 times [2023-11-26 10:45:49,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:49,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601134060] [2023-11-26 10:45:49,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:49,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:49,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:49,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601134060] [2023-11-26 10:45:49,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601134060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:49,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:49,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:45:49,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622282925] [2023-11-26 10:45:49,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:49,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:45:49,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:49,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:45:49,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:45:49,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2023-11-26 10:45:49,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 28 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:49,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:49,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2023-11-26 10:45:49,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:49,657 INFO L124 PetriNetUnfolderBase]: 29/96 cut-off events. [2023-11-26 10:45:49,657 INFO L125 PetriNetUnfolderBase]: For 86/88 co-relation queries the response was YES. [2023-11-26 10:45:49,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 96 events. 29/96 cut-off events. For 86/88 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 321 event pairs, 6 based on Foata normal form. 9/105 useless extension candidates. Maximal degree in co-relation 271. Up to 46 conditions per place. [2023-11-26 10:45:49,660 INFO L140 encePairwiseOnDemand]: 14/21 looper letters, 23 selfloop transitions, 8 changer transitions 2/38 dead transitions. [2023-11-26 10:45:49,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 244 flow [2023-11-26 10:45:49,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:45:49,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:45:49,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2023-11-26 10:45:49,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2023-11-26 10:45:49,665 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 64 transitions. [2023-11-26 10:45:49,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 64 transitions. [2023-11-26 10:45:49,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:49,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 64 transitions. [2023-11-26 10:45:49,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:49,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:49,670 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:49,670 INFO L175 Difference]: Start difference. First operand has 42 places, 28 transitions, 142 flow. Second operand 6 states and 64 transitions. [2023-11-26 10:45:49,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 244 flow [2023-11-26 10:45:49,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 38 transitions, 234 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-26 10:45:49,679 INFO L231 Difference]: Finished difference. Result has 46 places, 27 transitions, 148 flow [2023-11-26 10:45:49,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=46, PETRI_TRANSITIONS=27} [2023-11-26 10:45:49,681 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 22 predicate places. [2023-11-26 10:45:49,682 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 27 transitions, 148 flow [2023-11-26 10:45:49,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:49,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:49,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:49,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:45:49,683 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:49,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:49,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1357146153, now seen corresponding path program 1 times [2023-11-26 10:45:49,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:49,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846855217] [2023-11-26 10:45:49,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:49,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:49,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:49,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:49,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846855217] [2023-11-26 10:45:49,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846855217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:49,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:49,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:45:49,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579882088] [2023-11-26 10:45:49,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:49,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:45:49,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:49,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:45:49,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:45:49,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 21 [2023-11-26 10:45:49,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 27 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:49,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:49,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 21 [2023-11-26 10:45:49,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:50,062 INFO L124 PetriNetUnfolderBase]: 25/90 cut-off events. [2023-11-26 10:45:50,062 INFO L125 PetriNetUnfolderBase]: For 159/164 co-relation queries the response was YES. [2023-11-26 10:45:50,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 90 events. 25/90 cut-off events. For 159/164 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 333 event pairs, 1 based on Foata normal form. 7/97 useless extension candidates. Maximal degree in co-relation 263. Up to 27 conditions per place. [2023-11-26 10:45:50,064 INFO L140 encePairwiseOnDemand]: 14/21 looper letters, 30 selfloop transitions, 9 changer transitions 0/46 dead transitions. [2023-11-26 10:45:50,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 321 flow [2023-11-26 10:45:50,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:45:50,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:45:50,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2023-11-26 10:45:50,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2023-11-26 10:45:50,066 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 66 transitions. [2023-11-26 10:45:50,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 66 transitions. [2023-11-26 10:45:50,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:50,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 66 transitions. [2023-11-26 10:45:50,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:50,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:50,068 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:50,068 INFO L175 Difference]: Start difference. First operand has 46 places, 27 transitions, 148 flow. Second operand 5 states and 66 transitions. [2023-11-26 10:45:50,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 321 flow [2023-11-26 10:45:50,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 46 transitions, 288 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-26 10:45:50,072 INFO L231 Difference]: Finished difference. Result has 46 places, 31 transitions, 176 flow [2023-11-26 10:45:50,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=46, PETRI_TRANSITIONS=31} [2023-11-26 10:45:50,074 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 22 predicate places. [2023-11-26 10:45:50,074 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 31 transitions, 176 flow [2023-11-26 10:45:50,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:50,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:50,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:50,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:45:50,075 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:50,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:50,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1546718569, now seen corresponding path program 2 times [2023-11-26 10:45:50,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:50,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009943686] [2023-11-26 10:45:50,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:50,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:50,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:50,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009943686] [2023-11-26 10:45:50,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009943686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:50,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:50,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:45:50,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105729512] [2023-11-26 10:45:50,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:50,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:45:50,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:50,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:45:50,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:45:50,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 21 [2023-11-26 10:45:50,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 31 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:50,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:50,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 21 [2023-11-26 10:45:50,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:50,586 INFO L124 PetriNetUnfolderBase]: 25/104 cut-off events. [2023-11-26 10:45:50,586 INFO L125 PetriNetUnfolderBase]: For 149/153 co-relation queries the response was YES. [2023-11-26 10:45:50,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 104 events. 25/104 cut-off events. For 149/153 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 433 event pairs, 0 based on Foata normal form. 7/111 useless extension candidates. Maximal degree in co-relation 340. Up to 31 conditions per place. [2023-11-26 10:45:50,596 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 30 selfloop transitions, 13 changer transitions 0/50 dead transitions. [2023-11-26 10:45:50,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 370 flow [2023-11-26 10:45:50,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:45:50,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:45:50,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2023-11-26 10:45:50,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5793650793650794 [2023-11-26 10:45:50,600 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 73 transitions. [2023-11-26 10:45:50,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 73 transitions. [2023-11-26 10:45:50,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:50,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 73 transitions. [2023-11-26 10:45:50,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:50,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:50,605 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:50,605 INFO L175 Difference]: Start difference. First operand has 46 places, 31 transitions, 176 flow. Second operand 6 states and 73 transitions. [2023-11-26 10:45:50,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 370 flow [2023-11-26 10:45:50,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 344 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:45:50,611 INFO L231 Difference]: Finished difference. Result has 51 places, 35 transitions, 227 flow [2023-11-26 10:45:50,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=51, PETRI_TRANSITIONS=35} [2023-11-26 10:45:50,615 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 27 predicate places. [2023-11-26 10:45:50,616 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 35 transitions, 227 flow [2023-11-26 10:45:50,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:50,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:50,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:50,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:45:50,617 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:50,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:50,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1317487950, now seen corresponding path program 1 times [2023-11-26 10:45:50,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:50,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604823369] [2023-11-26 10:45:50,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:50,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:50,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:50,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:50,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604823369] [2023-11-26 10:45:50,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604823369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:50,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:50,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:45:50,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904313902] [2023-11-26 10:45:50,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:50,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:45:50,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:50,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:45:50,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:45:50,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 21 [2023-11-26 10:45:50,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 35 transitions, 227 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:50,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:50,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 21 [2023-11-26 10:45:50,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:50,939 INFO L124 PetriNetUnfolderBase]: 30/128 cut-off events. [2023-11-26 10:45:50,939 INFO L125 PetriNetUnfolderBase]: For 263/268 co-relation queries the response was YES. [2023-11-26 10:45:50,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 128 events. 30/128 cut-off events. For 263/268 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 573 event pairs, 11 based on Foata normal form. 10/138 useless extension candidates. Maximal degree in co-relation 450. Up to 57 conditions per place. [2023-11-26 10:45:50,942 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 34 selfloop transitions, 17 changer transitions 0/58 dead transitions. [2023-11-26 10:45:50,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 466 flow [2023-11-26 10:45:50,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:45:50,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:45:50,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2023-11-26 10:45:50,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2023-11-26 10:45:50,945 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 72 transitions. [2023-11-26 10:45:50,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 72 transitions. [2023-11-26 10:45:50,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:50,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 72 transitions. [2023-11-26 10:45:50,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:50,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:50,948 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:50,948 INFO L175 Difference]: Start difference. First operand has 51 places, 35 transitions, 227 flow. Second operand 5 states and 72 transitions. [2023-11-26 10:45:50,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 466 flow [2023-11-26 10:45:50,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 433 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-26 10:45:50,954 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 335 flow [2023-11-26 10:45:50,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=335, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2023-11-26 10:45:50,958 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 31 predicate places. [2023-11-26 10:45:50,958 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 335 flow [2023-11-26 10:45:50,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:50,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:50,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:50,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:45:50,959 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:50,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:50,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1079855285, now seen corresponding path program 3 times [2023-11-26 10:45:50,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:50,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180101585] [2023-11-26 10:45:50,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:50,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:51,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:51,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180101585] [2023-11-26 10:45:51,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180101585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:51,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:51,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:45:51,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614800714] [2023-11-26 10:45:51,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:51,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:45:51,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:51,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:45:51,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:45:51,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 21 [2023-11-26 10:45:51,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 335 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:51,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:51,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 21 [2023-11-26 10:45:51,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:51,306 INFO L124 PetriNetUnfolderBase]: 20/96 cut-off events. [2023-11-26 10:45:51,306 INFO L125 PetriNetUnfolderBase]: For 335/339 co-relation queries the response was YES. [2023-11-26 10:45:51,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 96 events. 20/96 cut-off events. For 335/339 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 367 event pairs, 0 based on Foata normal form. 10/106 useless extension candidates. Maximal degree in co-relation 398. Up to 34 conditions per place. [2023-11-26 10:45:51,308 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 35 selfloop transitions, 21 changer transitions 0/63 dead transitions. [2023-11-26 10:45:51,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 576 flow [2023-11-26 10:45:51,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:45:51,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:45:51,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2023-11-26 10:45:51,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2023-11-26 10:45:51,310 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 72 transitions. [2023-11-26 10:45:51,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 72 transitions. [2023-11-26 10:45:51,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:51,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 72 transitions. [2023-11-26 10:45:51,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:51,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:51,313 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:51,314 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 335 flow. Second operand 5 states and 72 transitions. [2023-11-26 10:45:51,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 576 flow [2023-11-26 10:45:51,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 547 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-26 10:45:51,323 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 463 flow [2023-11-26 10:45:51,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=463, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2023-11-26 10:45:51,324 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 37 predicate places. [2023-11-26 10:45:51,324 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 463 flow [2023-11-26 10:45:51,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:51,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:51,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:51,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:45:51,327 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:51,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:51,328 INFO L85 PathProgramCache]: Analyzing trace with hash -860567059, now seen corresponding path program 1 times [2023-11-26 10:45:51,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:51,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351030114] [2023-11-26 10:45:51,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:51,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:51,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:51,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351030114] [2023-11-26 10:45:51,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351030114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:51,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:51,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:45:51,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980933939] [2023-11-26 10:45:51,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:51,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:45:51,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:51,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:45:51,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:45:51,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2023-11-26 10:45:51,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 463 flow. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:51,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:51,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2023-11-26 10:45:51,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:51,897 INFO L124 PetriNetUnfolderBase]: 30/119 cut-off events. [2023-11-26 10:45:51,897 INFO L125 PetriNetUnfolderBase]: For 493/497 co-relation queries the response was YES. [2023-11-26 10:45:51,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 119 events. 30/119 cut-off events. For 493/497 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 467 event pairs, 0 based on Foata normal form. 6/125 useless extension candidates. Maximal degree in co-relation 546. Up to 64 conditions per place. [2023-11-26 10:45:51,899 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 54 selfloop transitions, 17 changer transitions 0/74 dead transitions. [2023-11-26 10:45:51,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 74 transitions, 773 flow [2023-11-26 10:45:51,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 10:45:51,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 10:45:51,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 75 transitions. [2023-11-26 10:45:51,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3246753246753247 [2023-11-26 10:45:51,902 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 75 transitions. [2023-11-26 10:45:51,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 75 transitions. [2023-11-26 10:45:51,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:51,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 75 transitions. [2023-11-26 10:45:51,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:51,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 21.0) internal successors, (252), 12 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:51,904 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 21.0) internal successors, (252), 12 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:51,904 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 463 flow. Second operand 11 states and 75 transitions. [2023-11-26 10:45:51,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 74 transitions, 773 flow [2023-11-26 10:45:51,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 74 transitions, 741 flow, removed 16 selfloop flow, removed 0 redundant places. [2023-11-26 10:45:51,913 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 559 flow [2023-11-26 10:45:51,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=559, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2023-11-26 10:45:51,914 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 52 predicate places. [2023-11-26 10:45:51,914 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 559 flow [2023-11-26 10:45:51,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:51,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:51,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:51,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:45:51,915 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:51,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:51,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1307763323, now seen corresponding path program 2 times [2023-11-26 10:45:51,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:51,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443838171] [2023-11-26 10:45:51,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:51,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:52,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:52,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443838171] [2023-11-26 10:45:52,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443838171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:52,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:52,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:45:52,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038748109] [2023-11-26 10:45:52,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:52,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:45:52,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:52,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:45:52,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:45:52,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2023-11-26 10:45:52,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 559 flow. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:52,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:52,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2023-11-26 10:45:52,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:52,602 INFO L124 PetriNetUnfolderBase]: 32/132 cut-off events. [2023-11-26 10:45:52,602 INFO L125 PetriNetUnfolderBase]: For 642/644 co-relation queries the response was YES. [2023-11-26 10:45:52,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 132 events. 32/132 cut-off events. For 642/644 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 566 event pairs, 2 based on Foata normal form. 4/136 useless extension candidates. Maximal degree in co-relation 644. Up to 70 conditions per place. [2023-11-26 10:45:52,606 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 60 selfloop transitions, 22 changer transitions 0/85 dead transitions. [2023-11-26 10:45:52,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 85 transitions, 927 flow [2023-11-26 10:45:52,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 10:45:52,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 10:45:52,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 80 transitions. [2023-11-26 10:45:52,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463203463203463 [2023-11-26 10:45:52,608 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 80 transitions. [2023-11-26 10:45:52,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 80 transitions. [2023-11-26 10:45:52,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:52,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 80 transitions. [2023-11-26 10:45:52,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:52,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 21.0) internal successors, (252), 12 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:52,612 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 21.0) internal successors, (252), 12 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:52,612 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 559 flow. Second operand 11 states and 80 transitions. [2023-11-26 10:45:52,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 85 transitions, 927 flow [2023-11-26 10:45:52,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 85 transitions, 883 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-26 10:45:52,623 INFO L231 Difference]: Finished difference. Result has 87 places, 70 transitions, 677 flow [2023-11-26 10:45:52,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=677, PETRI_PLACES=87, PETRI_TRANSITIONS=70} [2023-11-26 10:45:52,624 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 63 predicate places. [2023-11-26 10:45:52,624 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 70 transitions, 677 flow [2023-11-26 10:45:52,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:52,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:52,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:52,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:45:52,625 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:52,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:52,626 INFO L85 PathProgramCache]: Analyzing trace with hash 767829299, now seen corresponding path program 1 times [2023-11-26 10:45:52,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:52,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645555080] [2023-11-26 10:45:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:52,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:53,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:53,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645555080] [2023-11-26 10:45:53,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645555080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:53,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:53,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:45:53,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855993200] [2023-11-26 10:45:53,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:53,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:45:53,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:53,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:45:53,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:45:53,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2023-11-26 10:45:53,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 70 transitions, 677 flow. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:53,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:53,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2023-11-26 10:45:53,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:53,427 INFO L124 PetriNetUnfolderBase]: 33/138 cut-off events. [2023-11-26 10:45:53,427 INFO L125 PetriNetUnfolderBase]: For 796/798 co-relation queries the response was YES. [2023-11-26 10:45:53,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 138 events. 33/138 cut-off events. For 796/798 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 596 event pairs, 5 based on Foata normal form. 4/142 useless extension candidates. Maximal degree in co-relation 718. Up to 78 conditions per place. [2023-11-26 10:45:53,430 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 64 selfloop transitions, 23 changer transitions 0/89 dead transitions. [2023-11-26 10:45:53,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 89 transitions, 971 flow [2023-11-26 10:45:53,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 10:45:53,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-26 10:45:53,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 78 transitions. [2023-11-26 10:45:53,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2023-11-26 10:45:53,432 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 78 transitions. [2023-11-26 10:45:53,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 78 transitions. [2023-11-26 10:45:53,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:53,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 78 transitions. [2023-11-26 10:45:53,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:53,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 21.0) internal successors, (294), 14 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:53,435 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 21.0) internal successors, (294), 14 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:53,435 INFO L175 Difference]: Start difference. First operand has 87 places, 70 transitions, 677 flow. Second operand 13 states and 78 transitions. [2023-11-26 10:45:53,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 89 transitions, 971 flow [2023-11-26 10:45:53,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 89 transitions, 944 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-26 10:45:53,447 INFO L231 Difference]: Finished difference. Result has 101 places, 75 transitions, 747 flow [2023-11-26 10:45:53,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=747, PETRI_PLACES=101, PETRI_TRANSITIONS=75} [2023-11-26 10:45:53,448 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 77 predicate places. [2023-11-26 10:45:53,448 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 75 transitions, 747 flow [2023-11-26 10:45:53,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:53,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:53,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:53,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 10:45:53,449 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:53,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:53,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1371011463, now seen corresponding path program 3 times [2023-11-26 10:45:53,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:53,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054790257] [2023-11-26 10:45:53,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:53,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:53,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:53,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:53,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054790257] [2023-11-26 10:45:53,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054790257] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:53,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:53,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:45:53,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244204124] [2023-11-26 10:45:53,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:53,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:45:53,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:53,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:45:53,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:45:53,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2023-11-26 10:45:53,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 75 transitions, 747 flow. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:53,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:53,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2023-11-26 10:45:53,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:54,147 INFO L124 PetriNetUnfolderBase]: 33/142 cut-off events. [2023-11-26 10:45:54,147 INFO L125 PetriNetUnfolderBase]: For 914/915 co-relation queries the response was YES. [2023-11-26 10:45:54,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 142 events. 33/142 cut-off events. For 914/915 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 633 event pairs, 5 based on Foata normal form. 2/144 useless extension candidates. Maximal degree in co-relation 777. Up to 73 conditions per place. [2023-11-26 10:45:54,150 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 69 selfloop transitions, 25 changer transitions 0/96 dead transitions. [2023-11-26 10:45:54,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 96 transitions, 1121 flow [2023-11-26 10:45:54,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 10:45:54,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-26 10:45:54,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 78 transitions. [2023-11-26 10:45:54,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2023-11-26 10:45:54,152 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 78 transitions. [2023-11-26 10:45:54,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 78 transitions. [2023-11-26 10:45:54,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:54,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 78 transitions. [2023-11-26 10:45:54,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:54,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 21.0) internal successors, (294), 14 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:54,154 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 21.0) internal successors, (294), 14 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:54,154 INFO L175 Difference]: Start difference. First operand has 101 places, 75 transitions, 747 flow. Second operand 13 states and 78 transitions. [2023-11-26 10:45:54,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 96 transitions, 1121 flow [2023-11-26 10:45:54,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 96 transitions, 1045 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-11-26 10:45:54,167 INFO L231 Difference]: Finished difference. Result has 108 places, 82 transitions, 808 flow [2023-11-26 10:45:54,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=808, PETRI_PLACES=108, PETRI_TRANSITIONS=82} [2023-11-26 10:45:54,168 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 84 predicate places. [2023-11-26 10:45:54,168 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 82 transitions, 808 flow [2023-11-26 10:45:54,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:54,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:54,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:54,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 10:45:54,169 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:54,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:54,170 INFO L85 PathProgramCache]: Analyzing trace with hash -848363211, now seen corresponding path program 2 times [2023-11-26 10:45:54,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:54,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010308453] [2023-11-26 10:45:54,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:54,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:54,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:54,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:54,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010308453] [2023-11-26 10:45:54,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010308453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:54,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:54,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:45:54,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515413484] [2023-11-26 10:45:54,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:54,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:45:54,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:54,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:45:54,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:45:54,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2023-11-26 10:45:54,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 82 transitions, 808 flow. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:54,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:54,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2023-11-26 10:45:54,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:54,894 INFO L124 PetriNetUnfolderBase]: 34/156 cut-off events. [2023-11-26 10:45:54,894 INFO L125 PetriNetUnfolderBase]: For 958/959 co-relation queries the response was YES. [2023-11-26 10:45:54,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 890 conditions, 156 events. 34/156 cut-off events. For 958/959 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 746 event pairs, 5 based on Foata normal form. 2/158 useless extension candidates. Maximal degree in co-relation 842. Up to 86 conditions per place. [2023-11-26 10:45:54,897 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 76 selfloop transitions, 28 changer transitions 0/107 dead transitions. [2023-11-26 10:45:54,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 107 transitions, 1209 flow [2023-11-26 10:45:54,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 10:45:54,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-26 10:45:54,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 82 transitions. [2023-11-26 10:45:54,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2789115646258503 [2023-11-26 10:45:54,899 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 82 transitions. [2023-11-26 10:45:54,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 82 transitions. [2023-11-26 10:45:54,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:54,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 82 transitions. [2023-11-26 10:45:54,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:54,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 21.0) internal successors, (315), 15 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:54,901 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 21.0) internal successors, (315), 15 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:54,902 INFO L175 Difference]: Start difference. First operand has 108 places, 82 transitions, 808 flow. Second operand 14 states and 82 transitions. [2023-11-26 10:45:54,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 107 transitions, 1209 flow [2023-11-26 10:45:54,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 107 transitions, 1174 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-26 10:45:54,915 INFO L231 Difference]: Finished difference. Result has 122 places, 93 transitions, 939 flow [2023-11-26 10:45:54,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=939, PETRI_PLACES=122, PETRI_TRANSITIONS=93} [2023-11-26 10:45:54,916 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 98 predicate places. [2023-11-26 10:45:54,916 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 93 transitions, 939 flow [2023-11-26 10:45:54,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:54,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:54,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:54,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 10:45:54,917 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:54,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:54,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1536967601, now seen corresponding path program 3 times [2023-11-26 10:45:54,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:54,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231489259] [2023-11-26 10:45:54,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:54,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:55,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:55,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231489259] [2023-11-26 10:45:55,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231489259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:55,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:55,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:45:55,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628996774] [2023-11-26 10:45:55,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:55,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:45:55,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:55,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:45:55,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:45:55,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2023-11-26 10:45:55,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 93 transitions, 939 flow. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:55,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:55,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2023-11-26 10:45:55,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:55,433 INFO L124 PetriNetUnfolderBase]: 38/172 cut-off events. [2023-11-26 10:45:55,433 INFO L125 PetriNetUnfolderBase]: For 1157/1157 co-relation queries the response was YES. [2023-11-26 10:45:55,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1032 conditions, 172 events. 38/172 cut-off events. For 1157/1157 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 882 event pairs, 0 based on Foata normal form. 2/174 useless extension candidates. Maximal degree in co-relation 979. Up to 81 conditions per place. [2023-11-26 10:45:55,437 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 66 selfloop transitions, 42 changer transitions 0/114 dead transitions. [2023-11-26 10:45:55,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 114 transitions, 1323 flow [2023-11-26 10:45:55,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 10:45:55,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-26 10:45:55,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 79 transitions. [2023-11-26 10:45:55,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3134920634920635 [2023-11-26 10:45:55,439 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 79 transitions. [2023-11-26 10:45:55,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 79 transitions. [2023-11-26 10:45:55,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:55,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 79 transitions. [2023-11-26 10:45:55,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 6.583333333333333) internal successors, (79), 12 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:55,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 21.0) internal successors, (273), 13 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:55,443 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 21.0) internal successors, (273), 13 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:55,443 INFO L175 Difference]: Start difference. First operand has 122 places, 93 transitions, 939 flow. Second operand 12 states and 79 transitions. [2023-11-26 10:45:55,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 114 transitions, 1323 flow [2023-11-26 10:45:55,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 114 transitions, 1304 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-26 10:45:55,461 INFO L231 Difference]: Finished difference. Result has 137 places, 108 transitions, 1178 flow [2023-11-26 10:45:55,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1178, PETRI_PLACES=137, PETRI_TRANSITIONS=108} [2023-11-26 10:45:55,462 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 113 predicate places. [2023-11-26 10:45:55,463 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 108 transitions, 1178 flow [2023-11-26 10:45:55,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:55,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:55,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:55,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 10:45:55,464 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:55,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:55,464 INFO L85 PathProgramCache]: Analyzing trace with hash -223337569, now seen corresponding path program 4 times [2023-11-26 10:45:55,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:55,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929054845] [2023-11-26 10:45:55,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:55,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:55,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:55,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:55,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929054845] [2023-11-26 10:45:55,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929054845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:55,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:55,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:45:55,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647521013] [2023-11-26 10:45:55,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:55,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:45:55,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:55,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:45:55,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:45:55,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2023-11-26 10:45:55,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 108 transitions, 1178 flow. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:55,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:55,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2023-11-26 10:45:55,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:56,087 INFO L124 PetriNetUnfolderBase]: 33/170 cut-off events. [2023-11-26 10:45:56,088 INFO L125 PetriNetUnfolderBase]: For 1514/1516 co-relation queries the response was YES. [2023-11-26 10:45:56,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 170 events. 33/170 cut-off events. For 1514/1516 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 893 event pairs, 2 based on Foata normal form. 2/172 useless extension candidates. Maximal degree in co-relation 1041. Up to 81 conditions per place. [2023-11-26 10:45:56,092 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 73 selfloop transitions, 44 changer transitions 0/128 dead transitions. [2023-11-26 10:45:56,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 128 transitions, 1595 flow [2023-11-26 10:45:56,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 10:45:56,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-26 10:45:56,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 81 transitions. [2023-11-26 10:45:56,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2023-11-26 10:45:56,094 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 81 transitions. [2023-11-26 10:45:56,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 81 transitions. [2023-11-26 10:45:56,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:56,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 81 transitions. [2023-11-26 10:45:56,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:56,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 21.0) internal successors, (273), 13 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:56,098 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 21.0) internal successors, (273), 13 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:56,098 INFO L175 Difference]: Start difference. First operand has 137 places, 108 transitions, 1178 flow. Second operand 12 states and 81 transitions. [2023-11-26 10:45:56,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 128 transitions, 1595 flow [2023-11-26 10:45:56,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 128 transitions, 1548 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-11-26 10:45:56,120 INFO L231 Difference]: Finished difference. Result has 150 places, 118 transitions, 1362 flow [2023-11-26 10:45:56,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1362, PETRI_PLACES=150, PETRI_TRANSITIONS=118} [2023-11-26 10:45:56,122 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 126 predicate places. [2023-11-26 10:45:56,122 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 118 transitions, 1362 flow [2023-11-26 10:45:56,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:56,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:56,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:56,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 10:45:56,123 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:56,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:56,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1037872051, now seen corresponding path program 4 times [2023-11-26 10:45:56,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:56,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603667537] [2023-11-26 10:45:56,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:56,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:56,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:56,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:56,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603667537] [2023-11-26 10:45:56,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603667537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:56,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:56,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:45:56,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011706125] [2023-11-26 10:45:56,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:56,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:45:56,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:56,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:45:56,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:45:56,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2023-11-26 10:45:56,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 118 transitions, 1362 flow. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:56,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:56,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2023-11-26 10:45:56,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:56,676 INFO L124 PetriNetUnfolderBase]: 35/181 cut-off events. [2023-11-26 10:45:56,676 INFO L125 PetriNetUnfolderBase]: For 1842/1844 co-relation queries the response was YES. [2023-11-26 10:45:56,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1216 conditions, 181 events. 35/181 cut-off events. For 1842/1844 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 988 event pairs, 0 based on Foata normal form. 2/183 useless extension candidates. Maximal degree in co-relation 1152. Up to 98 conditions per place. [2023-11-26 10:45:56,680 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 92 selfloop transitions, 35 changer transitions 0/138 dead transitions. [2023-11-26 10:45:56,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 138 transitions, 1790 flow [2023-11-26 10:45:56,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 10:45:56,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 10:45:56,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 75 transitions. [2023-11-26 10:45:56,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3246753246753247 [2023-11-26 10:45:56,683 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 75 transitions. [2023-11-26 10:45:56,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 75 transitions. [2023-11-26 10:45:56,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:56,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 75 transitions. [2023-11-26 10:45:56,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:56,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 21.0) internal successors, (252), 12 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:56,688 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 21.0) internal successors, (252), 12 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:56,688 INFO L175 Difference]: Start difference. First operand has 150 places, 118 transitions, 1362 flow. Second operand 11 states and 75 transitions. [2023-11-26 10:45:56,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 138 transitions, 1790 flow [2023-11-26 10:45:56,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 138 transitions, 1722 flow, removed 18 selfloop flow, removed 5 redundant places. [2023-11-26 10:45:56,711 INFO L231 Difference]: Finished difference. Result has 159 places, 128 transitions, 1491 flow [2023-11-26 10:45:56,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1491, PETRI_PLACES=159, PETRI_TRANSITIONS=128} [2023-11-26 10:45:56,713 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 135 predicate places. [2023-11-26 10:45:56,713 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 128 transitions, 1491 flow [2023-11-26 10:45:56,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:56,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:56,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:56,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 10:45:56,714 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:56,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:56,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1237173841, now seen corresponding path program 5 times [2023-11-26 10:45:56,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:56,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970087788] [2023-11-26 10:45:56,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:56,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:57,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:57,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:57,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970087788] [2023-11-26 10:45:57,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970087788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:57,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:57,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:45:57,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928081431] [2023-11-26 10:45:57,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:57,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:45:57,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:57,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:45:57,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:45:57,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2023-11-26 10:45:57,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 128 transitions, 1491 flow. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:57,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:57,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2023-11-26 10:45:57,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:57,401 INFO L124 PetriNetUnfolderBase]: 39/187 cut-off events. [2023-11-26 10:45:57,401 INFO L125 PetriNetUnfolderBase]: For 1935/1935 co-relation queries the response was YES. [2023-11-26 10:45:57,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1301 conditions, 187 events. 39/187 cut-off events. For 1935/1935 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1002 event pairs, 0 based on Foata normal form. 2/189 useless extension candidates. Maximal degree in co-relation 1234. Up to 61 conditions per place. [2023-11-26 10:45:57,405 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 88 selfloop transitions, 55 changer transitions 0/148 dead transitions. [2023-11-26 10:45:57,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 148 transitions, 1971 flow [2023-11-26 10:45:57,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:45:57,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 10:45:57,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 81 transitions. [2023-11-26 10:45:57,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2571428571428571 [2023-11-26 10:45:57,407 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 81 transitions. [2023-11-26 10:45:57,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 81 transitions. [2023-11-26 10:45:57,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:57,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 81 transitions. [2023-11-26 10:45:57,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 5.4) internal successors, (81), 15 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:57,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 21.0) internal successors, (336), 16 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:57,409 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 21.0) internal successors, (336), 16 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:57,410 INFO L175 Difference]: Start difference. First operand has 159 places, 128 transitions, 1491 flow. Second operand 15 states and 81 transitions. [2023-11-26 10:45:57,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 148 transitions, 1971 flow [2023-11-26 10:45:57,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 148 transitions, 1858 flow, removed 21 selfloop flow, removed 12 redundant places. [2023-11-26 10:45:57,433 INFO L231 Difference]: Finished difference. Result has 162 places, 137 transitions, 1625 flow [2023-11-26 10:45:57,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1377, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1625, PETRI_PLACES=162, PETRI_TRANSITIONS=137} [2023-11-26 10:45:57,434 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 138 predicate places. [2023-11-26 10:45:57,434 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 137 transitions, 1625 flow [2023-11-26 10:45:57,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:57,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:57,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:57,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 10:45:57,435 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:57,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:57,436 INFO L85 PathProgramCache]: Analyzing trace with hash 3148458, now seen corresponding path program 1 times [2023-11-26 10:45:57,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:57,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781159856] [2023-11-26 10:45:57,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:57,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:57,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:57,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:57,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781159856] [2023-11-26 10:45:57,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781159856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:57,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:57,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:45:57,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532563922] [2023-11-26 10:45:57,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:57,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:45:57,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:57,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:45:57,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:45:57,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2023-11-26 10:45:57,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 137 transitions, 1625 flow. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:57,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:57,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2023-11-26 10:45:57,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:58,069 INFO L124 PetriNetUnfolderBase]: 37/182 cut-off events. [2023-11-26 10:45:58,070 INFO L125 PetriNetUnfolderBase]: For 1898/1898 co-relation queries the response was YES. [2023-11-26 10:45:58,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1287 conditions, 182 events. 37/182 cut-off events. For 1898/1898 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 976 event pairs, 0 based on Foata normal form. 2/184 useless extension candidates. Maximal degree in co-relation 1224. Up to 117 conditions per place. [2023-11-26 10:45:58,073 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 95 selfloop transitions, 20 changer transitions 16/144 dead transitions. [2023-11-26 10:45:58,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 144 transitions, 1955 flow [2023-11-26 10:45:58,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:45:58,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 10:45:58,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 93 transitions. [2023-11-26 10:45:58,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29523809523809524 [2023-11-26 10:45:58,075 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 93 transitions. [2023-11-26 10:45:58,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 93 transitions. [2023-11-26 10:45:58,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:58,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 93 transitions. [2023-11-26 10:45:58,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:58,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 21.0) internal successors, (336), 16 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:58,078 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 21.0) internal successors, (336), 16 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:58,078 INFO L175 Difference]: Start difference. First operand has 162 places, 137 transitions, 1625 flow. Second operand 15 states and 93 transitions. [2023-11-26 10:45:58,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 144 transitions, 1955 flow [2023-11-26 10:45:58,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 144 transitions, 1876 flow, removed 18 selfloop flow, removed 7 redundant places. [2023-11-26 10:45:58,100 INFO L231 Difference]: Finished difference. Result has 169 places, 123 transitions, 1424 flow [2023-11-26 10:45:58,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1424, PETRI_PLACES=169, PETRI_TRANSITIONS=123} [2023-11-26 10:45:58,101 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 145 predicate places. [2023-11-26 10:45:58,101 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 123 transitions, 1424 flow [2023-11-26 10:45:58,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:58,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:58,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:58,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 10:45:58,102 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:58,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:58,102 INFO L85 PathProgramCache]: Analyzing trace with hash -2109262312, now seen corresponding path program 2 times [2023-11-26 10:45:58,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:58,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214173341] [2023-11-26 10:45:58,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:58,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:58,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:58,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214173341] [2023-11-26 10:45:58,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214173341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:58,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:58,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:45:58,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888328691] [2023-11-26 10:45:58,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:58,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:45:58,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:58,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:45:58,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:45:58,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2023-11-26 10:45:58,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 123 transitions, 1424 flow. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:58,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:58,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2023-11-26 10:45:58,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:58,893 INFO L124 PetriNetUnfolderBase]: 30/154 cut-off events. [2023-11-26 10:45:58,893 INFO L125 PetriNetUnfolderBase]: For 1613/1613 co-relation queries the response was YES. [2023-11-26 10:45:58,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 154 events. 30/154 cut-off events. For 1613/1613 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 773 event pairs, 0 based on Foata normal form. 6/160 useless extension candidates. Maximal degree in co-relation 1018. Up to 78 conditions per place. [2023-11-26 10:45:58,896 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 65 selfloop transitions, 17 changer transitions 35/125 dead transitions. [2023-11-26 10:45:58,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 125 transitions, 1673 flow [2023-11-26 10:45:58,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-26 10:45:58,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-26 10:45:58,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 101 transitions. [2023-11-26 10:45:58,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28291316526610644 [2023-11-26 10:45:58,898 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 101 transitions. [2023-11-26 10:45:58,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 101 transitions. [2023-11-26 10:45:58,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:58,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 101 transitions. [2023-11-26 10:45:58,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:58,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 21.0) internal successors, (378), 18 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:58,901 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 21.0) internal successors, (378), 18 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:58,901 INFO L175 Difference]: Start difference. First operand has 169 places, 123 transitions, 1424 flow. Second operand 17 states and 101 transitions. [2023-11-26 10:45:58,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 125 transitions, 1673 flow [2023-11-26 10:45:58,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 125 transitions, 1570 flow, removed 6 selfloop flow, removed 13 redundant places. [2023-11-26 10:45:58,919 INFO L231 Difference]: Finished difference. Result has 162 places, 87 transitions, 952 flow [2023-11-26 10:45:58,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=952, PETRI_PLACES=162, PETRI_TRANSITIONS=87} [2023-11-26 10:45:58,920 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 138 predicate places. [2023-11-26 10:45:58,920 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 87 transitions, 952 flow [2023-11-26 10:45:58,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:58,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:58,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:58,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 10:45:58,921 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:58,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:58,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1885957165, now seen corresponding path program 1 times [2023-11-26 10:45:58,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:58,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535038960] [2023-11-26 10:45:58,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:58,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:59,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:59,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:59,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535038960] [2023-11-26 10:45:59,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535038960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:59,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:59,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:45:59,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636707021] [2023-11-26 10:45:59,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:59,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:45:59,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:59,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:45:59,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:45:59,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2023-11-26 10:45:59,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 87 transitions, 952 flow. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:59,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:59,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2023-11-26 10:45:59,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:59,507 INFO L124 PetriNetUnfolderBase]: 20/111 cut-off events. [2023-11-26 10:45:59,507 INFO L125 PetriNetUnfolderBase]: For 979/979 co-relation queries the response was YES. [2023-11-26 10:45:59,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 744 conditions, 111 events. 20/111 cut-off events. For 979/979 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 467 event pairs, 0 based on Foata normal form. 2/113 useless extension candidates. Maximal degree in co-relation 703. Up to 63 conditions per place. [2023-11-26 10:45:59,509 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 56 selfloop transitions, 12 changer transitions 16/92 dead transitions. [2023-11-26 10:45:59,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 92 transitions, 1168 flow [2023-11-26 10:45:59,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 10:45:59,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-26 10:45:59,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 85 transitions. [2023-11-26 10:45:59,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2891156462585034 [2023-11-26 10:45:59,511 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 85 transitions. [2023-11-26 10:45:59,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 85 transitions. [2023-11-26 10:45:59,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:59,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 85 transitions. [2023-11-26 10:45:59,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:59,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 21.0) internal successors, (315), 15 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:59,513 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 21.0) internal successors, (315), 15 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:59,514 INFO L175 Difference]: Start difference. First operand has 162 places, 87 transitions, 952 flow. Second operand 14 states and 85 transitions. [2023-11-26 10:45:59,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 92 transitions, 1168 flow [2023-11-26 10:45:59,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 92 transitions, 1048 flow, removed 7 selfloop flow, removed 20 redundant places. [2023-11-26 10:45:59,525 INFO L231 Difference]: Finished difference. Result has 133 places, 73 transitions, 713 flow [2023-11-26 10:45:59,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=713, PETRI_PLACES=133, PETRI_TRANSITIONS=73} [2023-11-26 10:45:59,526 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 109 predicate places. [2023-11-26 10:45:59,527 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 73 transitions, 713 flow [2023-11-26 10:45:59,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:59,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:59,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:59,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 10:45:59,528 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:59,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:59,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1689345419, now seen corresponding path program 2 times [2023-11-26 10:45:59,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:59,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134901220] [2023-11-26 10:45:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:59,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:59,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:59,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:59,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134901220] [2023-11-26 10:45:59,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134901220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:59,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:59,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:45:59,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323342747] [2023-11-26 10:45:59,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:59,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:45:59,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:59,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:45:59,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:45:59,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2023-11-26 10:45:59,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 73 transitions, 713 flow. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:59,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:59,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2023-11-26 10:45:59,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:00,123 INFO L124 PetriNetUnfolderBase]: 15/83 cut-off events. [2023-11-26 10:46:00,124 INFO L125 PetriNetUnfolderBase]: For 581/581 co-relation queries the response was YES. [2023-11-26 10:46:00,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 83 events. 15/83 cut-off events. For 581/581 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 302 event pairs, 0 based on Foata normal form. 4/87 useless extension candidates. Maximal degree in co-relation 486. Up to 38 conditions per place. [2023-11-26 10:46:00,125 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 35 selfloop transitions, 8 changer transitions 28/75 dead transitions. [2023-11-26 10:46:00,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 75 transitions, 864 flow [2023-11-26 10:46:00,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:46:00,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 10:46:00,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 87 transitions. [2023-11-26 10:46:00,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2761904761904762 [2023-11-26 10:46:00,127 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 87 transitions. [2023-11-26 10:46:00,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 87 transitions. [2023-11-26 10:46:00,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:00,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 87 transitions. [2023-11-26 10:46:00,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:00,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 21.0) internal successors, (336), 16 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:00,129 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 21.0) internal successors, (336), 16 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:00,130 INFO L175 Difference]: Start difference. First operand has 133 places, 73 transitions, 713 flow. Second operand 15 states and 87 transitions. [2023-11-26 10:46:00,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 75 transitions, 864 flow [2023-11-26 10:46:00,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 75 transitions, 795 flow, removed 12 selfloop flow, removed 13 redundant places. [2023-11-26 10:46:00,138 INFO L231 Difference]: Finished difference. Result has 123 places, 45 transitions, 386 flow [2023-11-26 10:46:00,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=386, PETRI_PLACES=123, PETRI_TRANSITIONS=45} [2023-11-26 10:46:00,139 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 99 predicate places. [2023-11-26 10:46:00,139 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 45 transitions, 386 flow [2023-11-26 10:46:00,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:00,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:00,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:00,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-26 10:46:00,140 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:46:00,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:00,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1666470137, now seen corresponding path program 3 times [2023-11-26 10:46:00,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:00,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51036439] [2023-11-26 10:46:00,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:00,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:00,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:00,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:00,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51036439] [2023-11-26 10:46:00,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51036439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:00,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:00,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:46:00,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814686290] [2023-11-26 10:46:00,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:00,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:46:00,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:00,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:46:00,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:46:00,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2023-11-26 10:46:00,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 45 transitions, 386 flow. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:00,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:00,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2023-11-26 10:46:00,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:00,676 INFO L124 PetriNetUnfolderBase]: 8/49 cut-off events. [2023-11-26 10:46:00,677 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2023-11-26 10:46:00,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 49 events. 8/49 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 116 event pairs, 0 based on Foata normal form. 2/51 useless extension candidates. Maximal degree in co-relation 262. Up to 23 conditions per place. [2023-11-26 10:46:00,678 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 24 selfloop transitions, 9 changer transitions 10/47 dead transitions. [2023-11-26 10:46:00,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 47 transitions, 491 flow [2023-11-26 10:46:00,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 10:46:00,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-26 10:46:00,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 72 transitions. [2023-11-26 10:46:00,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26373626373626374 [2023-11-26 10:46:00,680 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 72 transitions. [2023-11-26 10:46:00,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 72 transitions. [2023-11-26 10:46:00,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:00,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 72 transitions. [2023-11-26 10:46:00,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:00,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 21.0) internal successors, (294), 14 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:00,683 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 21.0) internal successors, (294), 14 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:00,684 INFO L175 Difference]: Start difference. First operand has 123 places, 45 transitions, 386 flow. Second operand 13 states and 72 transitions. [2023-11-26 10:46:00,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 47 transitions, 491 flow [2023-11-26 10:46:00,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 47 transitions, 397 flow, removed 18 selfloop flow, removed 22 redundant places. [2023-11-26 10:46:00,689 INFO L231 Difference]: Finished difference. Result has 93 places, 35 transitions, 246 flow [2023-11-26 10:46:00,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=246, PETRI_PLACES=93, PETRI_TRANSITIONS=35} [2023-11-26 10:46:00,690 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 69 predicate places. [2023-11-26 10:46:00,690 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 35 transitions, 246 flow [2023-11-26 10:46:00,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:00,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:00,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:00,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-26 10:46:00,691 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:46:00,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:00,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1940594894, now seen corresponding path program 1 times [2023-11-26 10:46:00,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:00,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668504721] [2023-11-26 10:46:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:00,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:00,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:00,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:00,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668504721] [2023-11-26 10:46:00,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668504721] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:00,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:00,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:46:00,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005868875] [2023-11-26 10:46:00,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:00,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:46:00,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:00,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:46:00,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:46:01,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2023-11-26 10:46:01,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 35 transitions, 246 flow. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:01,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:01,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2023-11-26 10:46:01,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:01,124 INFO L124 PetriNetUnfolderBase]: 5/37 cut-off events. [2023-11-26 10:46:01,125 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2023-11-26 10:46:01,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 37 events. 5/37 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 163. Up to 18 conditions per place. [2023-11-26 10:46:01,126 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 24 selfloop transitions, 8 changer transitions 0/36 dead transitions. [2023-11-26 10:46:01,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 36 transitions, 310 flow [2023-11-26 10:46:01,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:46:01,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 10:46:01,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 50 transitions. [2023-11-26 10:46:01,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26455026455026454 [2023-11-26 10:46:01,128 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 50 transitions. [2023-11-26 10:46:01,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 50 transitions. [2023-11-26 10:46:01,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:01,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 50 transitions. [2023-11-26 10:46:01,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:01,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:01,137 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:01,137 INFO L175 Difference]: Start difference. First operand has 93 places, 35 transitions, 246 flow. Second operand 9 states and 50 transitions. [2023-11-26 10:46:01,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 36 transitions, 310 flow [2023-11-26 10:46:01,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 36 transitions, 270 flow, removed 2 selfloop flow, removed 13 redundant places. [2023-11-26 10:46:01,140 INFO L231 Difference]: Finished difference. Result has 72 places, 34 transitions, 214 flow [2023-11-26 10:46:01,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=214, PETRI_PLACES=72, PETRI_TRANSITIONS=34} [2023-11-26 10:46:01,141 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 48 predicate places. [2023-11-26 10:46:01,141 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 34 transitions, 214 flow [2023-11-26 10:46:01,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:01,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:01,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:01,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-26 10:46:01,142 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:46:01,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:01,143 INFO L85 PathProgramCache]: Analyzing trace with hash 468550570, now seen corresponding path program 3 times [2023-11-26 10:46:01,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:01,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002082187] [2023-11-26 10:46:01,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:01,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:01,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:01,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:01,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002082187] [2023-11-26 10:46:01,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002082187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:01,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:01,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:46:01,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734048239] [2023-11-26 10:46:01,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:01,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:46:01,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:01,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:46:01,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:46:01,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2023-11-26 10:46:01,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 34 transitions, 214 flow. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:01,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:01,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2023-11-26 10:46:01,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:01,707 INFO L124 PetriNetUnfolderBase]: 3/37 cut-off events. [2023-11-26 10:46:01,707 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2023-11-26 10:46:01,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 37 events. 3/37 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 63 event pairs, 0 based on Foata normal form. 2/39 useless extension candidates. Maximal degree in co-relation 147. Up to 13 conditions per place. [2023-11-26 10:46:01,707 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 14 selfloop transitions, 8 changer transitions 10/36 dead transitions. [2023-11-26 10:46:01,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 36 transitions, 281 flow [2023-11-26 10:46:01,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 10:46:01,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-26 10:46:01,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 68 transitions. [2023-11-26 10:46:01,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2698412698412698 [2023-11-26 10:46:01,710 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 68 transitions. [2023-11-26 10:46:01,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 68 transitions. [2023-11-26 10:46:01,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:01,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 68 transitions. [2023-11-26 10:46:01,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:01,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 21.0) internal successors, (273), 13 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:01,712 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 21.0) internal successors, (273), 13 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:01,713 INFO L175 Difference]: Start difference. First operand has 72 places, 34 transitions, 214 flow. Second operand 12 states and 68 transitions. [2023-11-26 10:46:01,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 36 transitions, 281 flow [2023-11-26 10:46:01,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 36 transitions, 249 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-11-26 10:46:01,715 INFO L231 Difference]: Finished difference. Result has 76 places, 24 transitions, 137 flow [2023-11-26 10:46:01,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=137, PETRI_PLACES=76, PETRI_TRANSITIONS=24} [2023-11-26 10:46:01,716 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 52 predicate places. [2023-11-26 10:46:01,717 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 24 transitions, 137 flow [2023-11-26 10:46:01,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:01,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:01,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:01,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-26 10:46:01,718 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:46:01,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:01,719 INFO L85 PathProgramCache]: Analyzing trace with hash -28899386, now seen corresponding path program 1 times [2023-11-26 10:46:01,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:01,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564041146] [2023-11-26 10:46:01,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:01,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:01,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:01,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564041146] [2023-11-26 10:46:01,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564041146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:01,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:01,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:46:01,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069124081] [2023-11-26 10:46:01,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:01,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:46:01,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:01,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:46:01,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:46:02,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2023-11-26 10:46:02,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 24 transitions, 137 flow. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:02,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:02,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2023-11-26 10:46:02,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:02,174 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2023-11-26 10:46:02,174 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-26 10:46:02,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 25 events. 0/25 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2023-11-26 10:46:02,175 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 8 selfloop transitions, 4 changer transitions 11/25 dead transitions. [2023-11-26 10:46:02,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 25 transitions, 181 flow [2023-11-26 10:46:02,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 10:46:02,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 10:46:02,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 55 transitions. [2023-11-26 10:46:02,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23809523809523808 [2023-11-26 10:46:02,177 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 55 transitions. [2023-11-26 10:46:02,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 55 transitions. [2023-11-26 10:46:02,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:02,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 55 transitions. [2023-11-26 10:46:02,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:02,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 21.0) internal successors, (252), 12 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:02,178 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 21.0) internal successors, (252), 12 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:02,178 INFO L175 Difference]: Start difference. First operand has 76 places, 24 transitions, 137 flow. Second operand 11 states and 55 transitions. [2023-11-26 10:46:02,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 25 transitions, 181 flow [2023-11-26 10:46:02,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 25 transitions, 142 flow, removed 4 selfloop flow, removed 15 redundant places. [2023-11-26 10:46:02,182 INFO L231 Difference]: Finished difference. Result has 58 places, 14 transitions, 67 flow [2023-11-26 10:46:02,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=67, PETRI_PLACES=58, PETRI_TRANSITIONS=14} [2023-11-26 10:46:02,182 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 34 predicate places. [2023-11-26 10:46:02,183 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 14 transitions, 67 flow [2023-11-26 10:46:02,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:02,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:02,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:02,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-26 10:46:02,184 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:46:02,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:02,185 INFO L85 PathProgramCache]: Analyzing trace with hash 380122685, now seen corresponding path program 1 times [2023-11-26 10:46:02,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:02,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034162162] [2023-11-26 10:46:02,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:02,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:02,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:02,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034162162] [2023-11-26 10:46:02,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034162162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:02,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:02,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:46:02,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395310245] [2023-11-26 10:46:02,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:02,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:46:02,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:02,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:46:02,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:46:02,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2023-11-26 10:46:02,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 14 transitions, 67 flow. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:02,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:02,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2023-11-26 10:46:02,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:02,602 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-26 10:46:02,602 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-26 10:46:02,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 13 events. 0/13 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-26 10:46:02,602 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2023-11-26 10:46:02,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 13 transitions, 84 flow [2023-11-26 10:46:02,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:46:02,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 10:46:02,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2023-11-26 10:46:02,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.20634920634920634 [2023-11-26 10:46:02,603 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 39 transitions. [2023-11-26 10:46:02,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 39 transitions. [2023-11-26 10:46:02,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:02,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 39 transitions. [2023-11-26 10:46:02,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:02,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:02,604 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:02,604 INFO L175 Difference]: Start difference. First operand has 58 places, 14 transitions, 67 flow. Second operand 9 states and 39 transitions. [2023-11-26 10:46:02,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 13 transitions, 84 flow [2023-11-26 10:46:02,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 13 transitions, 53 flow, removed 1 selfloop flow, removed 14 redundant places. [2023-11-26 10:46:02,605 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2023-11-26 10:46:02,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2023-11-26 10:46:02,606 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2023-11-26 10:46:02,606 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2023-11-26 10:46:02,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:02,608 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2023-11-26 10:46:02,609 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2023-11-26 10:46:02,609 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-11-26 10:46:02,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2023-11-26 10:46:02,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2023-11-26 10:46:02,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2023-11-26 10:46:02,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2023-11-26 10:46:02,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-26 10:46:02,614 INFO L445 BasicCegarLoop]: Path program histogram: [5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:02,619 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 10:46:02,620 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:46:02,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:46:02 BasicIcfg [2023-11-26 10:46:02,626 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:46:02,626 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:46:02,626 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:46:02,627 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:46:02,627 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:45:47" (3/4) ... [2023-11-26 10:46:02,629 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 10:46:02,632 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-26 10:46:02,637 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-11-26 10:46:02,638 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-26 10:46:02,638 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-26 10:46:02,720 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ed9b2f-140b-4074-95cb-2d2528da6ffe/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 10:46:02,720 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ed9b2f-140b-4074-95cb-2d2528da6ffe/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 10:46:02,720 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:46:02,721 INFO L158 Benchmark]: Toolchain (without parser) took 16751.46ms. Allocated memory was 144.7MB in the beginning and 308.3MB in the end (delta: 163.6MB). Free memory was 103.2MB in the beginning and 258.5MB in the end (delta: -155.3MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2023-11-26 10:46:02,721 INFO L158 Benchmark]: CDTParser took 1.39ms. Allocated memory is still 104.9MB. Free memory was 53.9MB in the beginning and 53.8MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:46:02,722 INFO L158 Benchmark]: CACSL2BoogieTranslator took 623.74ms. Allocated memory is still 144.7MB. Free memory was 102.9MB in the beginning and 78.0MB in the end (delta: 24.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-26 10:46:02,722 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.95ms. Allocated memory is still 144.7MB. Free memory was 78.0MB in the beginning and 76.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:46:02,722 INFO L158 Benchmark]: Boogie Preprocessor took 73.54ms. Allocated memory is still 144.7MB. Free memory was 76.0MB in the beginning and 73.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:46:02,723 INFO L158 Benchmark]: RCFGBuilder took 698.76ms. Allocated memory is still 144.7MB. Free memory was 73.9MB in the beginning and 99.6MB in the end (delta: -25.7MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2023-11-26 10:46:02,723 INFO L158 Benchmark]: TraceAbstraction took 15177.55ms. Allocated memory was 144.7MB in the beginning and 308.3MB in the end (delta: 163.6MB). Free memory was 98.9MB in the beginning and 262.7MB in the end (delta: -163.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:46:02,724 INFO L158 Benchmark]: Witness Printer took 94.33ms. Allocated memory is still 308.3MB. Free memory was 262.7MB in the beginning and 258.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:46:02,730 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.39ms. Allocated memory is still 104.9MB. Free memory was 53.9MB in the beginning and 53.8MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 623.74ms. Allocated memory is still 144.7MB. Free memory was 102.9MB in the beginning and 78.0MB in the end (delta: 24.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.95ms. Allocated memory is still 144.7MB. Free memory was 78.0MB in the beginning and 76.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.54ms. Allocated memory is still 144.7MB. Free memory was 76.0MB in the beginning and 73.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 698.76ms. Allocated memory is still 144.7MB. Free memory was 73.9MB in the beginning and 99.6MB in the end (delta: -25.7MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * TraceAbstraction took 15177.55ms. Allocated memory was 144.7MB in the beginning and 308.3MB in the end (delta: 163.6MB). Free memory was 98.9MB in the beginning and 262.7MB in the end (delta: -163.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 94.33ms. Allocated memory is still 308.3MB. Free memory was 262.7MB in the beginning and 258.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3001]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 3001]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 3001]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 3001]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 33 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.1s, OverallIterations: 25, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1073 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 959 mSDsluCounter, 1186 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1110 mSDsCounter, 102 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3720 IncrementalHoareTripleChecker+Invalid, 3822 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 102 mSolverCounterUnsat, 76 mSDtfsCounter, 3720 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 286 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1625occurred in iteration=16, InterpolantAutomatonStates: 266, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 290 NumberOfCodeBlocks, 290 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 265 ConstructedInterpolants, 0 QuantifiedInterpolants, 2749 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 10:46:02,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ed9b2f-140b-4074-95cb-2d2528da6ffe/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE